E_Learning

简介：功能描述：商品的分类显示、浏览商品、用户登录、选购和调整购物车、集中结算、存储订单、查看订单 -Introduction: Functional Description: Commodity classification shows, browse merchandise, users log in, choose and adjust the shopping cart, centralized billing, store orders, view orders

电力系统潮流计算，基于三机九节点，可以在说明的基础上增加节点，改变线路阻抗导纳以及功率(Power system power flow calculation)

矩阵计算，包括矩阵相加、相减，相乘，还有求逆、转置，可直接调用-Matrices, including matrix addition, subtraction, multiplication, there is inverse, transpose, can be directly invoked

说明：  高数值孔径线性偏振光，圆偏振光，椭圆偏振光透镜聚焦源程序。(high NA lens fast focus)

《时间序列分析及应用：R语言，潘红宇》书籍分享(Time Series Analysis and Application: R Language, Pan Hongyu)

说明：  有干扰情况下的对角加载波束形成，包括LSMI、SMI两种加权向量(Diagonal loading beamforming with interference includes LSMI and SMI)

说明：  AD2S1210 spi通信读取数据，可以使用的.(AD2S1210 spi read data,you can use this code to do what do you want.)

Triangle生成精确的Delaunay三角剖分、约束Delaunay三角剖分、符合Delaunay三角剖分、Voronoi图和高质量三角网格。后者可以产生不小或大的角度，因此适合于有限元分析。(Triangle generates exact Delaunay triangulations, constrained Delaunay triangulations, conforming Delaunay triangulations, Voronoi diagrams, and high-quality triangular meshes. The latter can be generated with no small or large angles, and are thus suitable for finite element analysis.)

一款很实用的搜索软件，轻量实用，操作简单，功能强大(A very practical search software, lightweight and practical, simple operation, powerful)

说明：  可以对三角形、四边形、梯形、椎体、圆柱体等一些简单图形进行面积或体积的计算！（界面的语言为汉语）(It can calculate the area or volume of some simple figures such as triangle, quadrilateral, trapezoid, cone, cylinder, etc! (the interface language is Chinese))